uart_bus_pci.c revision 123019 
1/*
2 * Copyright (c) 2001 M. Warner Losh.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_pci.c 123019 2003-11-28 05:28:29Z imp $");
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/bus.h>
31#include <sys/conf.h>
32#include <sys/kernel.h>
33#include <sys/module.h>
34#include <machine/bus.h>
35#include <sys/rman.h>
36#include <machine/resource.h>
37
38#include <dev/pci/pcivar.h>
39
40#include <dev/uart/uart.h>
41#include <dev/uart/uart_bus.h>
42
43static int uart_pci_probe(device_t dev);
44
45static device_method_t uart_pci_methods[] = {
46	/* Device interface */
47	DEVMETHOD(device_probe,		uart_pci_probe),
48	DEVMETHOD(device_attach,	uart_bus_attach),
49	DEVMETHOD(device_detach,	uart_bus_detach),
50	{ 0, 0 }
51};
52
53static driver_t uart_pci_driver = {
54	uart_driver_name,
55	uart_pci_methods,
56	sizeof(struct uart_softc),
57};
58
59struct pci_id {
60	uint32_t	type;
61	const char	*desc;
62	int		rid;
63};
64
65static struct pci_id pci_ns8250_ids[] = {
66	{ 0x100812b9, "3COM PCI FaxModem", 0x10 },
67	{ 0x2000131f, "CyberSerial (1-port) 16550", 0x10 },
68	{ 0x01101407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
69	{ 0x01111407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
70	{ 0x048011c1, "Lucent kermit based PCI Modem", 0x14 },
71	{ 0x95211415, "Oxford Semiconductor PCI Dual Port Serial", 0x10 },
72	{ 0x7101135e, "SeaLevel Ultra 530.PCI Single Port Serial", 0x18 },
73	{ 0x0000151f, "SmartLink 5634PCV SurfRider", 0x10 },
74	{ 0x0103115d, "Xircom Cardbus modem", 0x10 },
75	{ 0x98459710, "Netmos Nm9845 PCI Bridge with Dual UART", 0x10 },
76	{ 0x01c0135c, "Quatech SSCLP-200/300", 0x18
77		/*
78		 * NB: You must mount the "SPAD" jumper to correctly detect
79		 * the FIFO on the UART.  Set the options on the jumpers,
80		 * we do not support the extra registers on the Quatech.
81		 */
82	},
83	{ 0x00000000, NULL, 0 }
84};
85
86static struct pci_id *
87uart_pci_match(uint32_t type, struct pci_id *id)
88{
89
90	while (id->type && id->type != type)
91		id++;
92	return ((id->type) ? id : NULL);
93}
94
95static int
96uart_pci_probe(device_t dev)
97{
98	struct uart_softc *sc;
99	struct pci_id *id;
100
101	sc = device_get_softc(dev);
102
103	id = uart_pci_match(pci_get_devid(dev), pci_ns8250_ids);
104	if (id != NULL) {
105		sc->sc_class = &uart_ns8250_class;
106		goto match;
107	}
108	/* Add checks for non-ns8250 IDs here. */
109	return (ENXIO);
110
111 match:
112	if (id->desc)
113		device_set_desc(dev, id->desc);
114	return (uart_bus_probe(dev, 0, 0, id->rid, 0));
115}
116
117DRIVER_MODULE(uart, pci, uart_pci_driver, uart_devclass, 0, 0);
118DRIVER_MODULE(uart, cardbus, uart_pci_driver, uart_devclass, 0, 0);
119